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usb: dwc2: Update port suspend/resume function definitions.

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Earlier "dwc2_port_suspend()" and "dwc2_port_resume()" functions
were implemented without proper description and host or device mode
difference.

- Added "dwc2_port_suspend" and "dwc2_port_resume" functions to
  "core.h" header file.

- Updated function description in documentation.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210408094502.61D18A0232@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artur Petrosyan 2021-04-08 13:45:01 +04:00 committed by Greg Kroah-Hartman
parent b77b0d0021
commit 139fae7a08
2 changed files with 23 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/usb/dwc2/core.h
View File

@ -1470,6 +1470,8 @@ void dwc2_hcd_connect(struct dwc2_hsotg *hsotg);
void dwc2_hcd_disconnect(struct dwc2_hsotg *hsotg, bool force);
void dwc2_hcd_start(struct dwc2_hsotg *hsotg);
int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup);
void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex);
void dwc2_port_resume(struct dwc2_hsotg *hsotg);
int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg);
int dwc2_restore_host_registers(struct dwc2_hsotg *hsotg);
int dwc2_host_enter_hibernation(struct dwc2_hsotg *hsotg);
@ -1493,6 +1495,8 @@ static inline void dwc2_hcd_start(struct dwc2_hsotg *hsotg) {}
static inline void dwc2_hcd_remove(struct dwc2_hsotg *hsotg) {}
static inline int dwc2_core_init(struct dwc2_hsotg *hsotg, bool initial_setup)
{ return 0; }
static inline void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex) {}
static inline void dwc2_port_resume(struct dwc2_hsotg *hsotg) {}
static inline int dwc2_hcd_init(struct dwc2_hsotg *hsotg)
{ return 0; }
static inline int dwc2_backup_host_registers(struct dwc2_hsotg *hsotg)

25
drivers/usb/dwc2/hcd.c
View File

@ -56,8 +56,6 @@
#include "core.h"
#include "hcd.h"
static void dwc2_port_resume(struct dwc2_hsotg *hsotg);
/*
* =========================================================================
* Host Core Layer Functions
@ -3277,8 +3275,16 @@ static int dwc2_host_is_b_hnp_enabled(struct dwc2_hsotg *hsotg)
return hcd->self.b_hnp_enable;
}
/* Must NOT be called with interrupt disabled or spinlock held */
static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)
/**
* dwc2_port_suspend() - Put controller in suspend mode for host.
*
* @hsotg: Programming view of the DWC_otg controller
* @windex: The control request wIndex field
*
* This function is for entering Host mode suspend.
* Must NOT be called with interrupt disabled or spinlock held.
*/
void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)
{
unsigned long flags;
u32 hprt0;
@ -3328,8 +3334,15 @@ static void dwc2_port_suspend(struct dwc2_hsotg *hsotg, u16 windex)
}
}
/* Must NOT be called with interrupt disabled or spinlock held */
static void dwc2_port_resume(struct dwc2_hsotg *hsotg)
/**
* dwc2_port_resume() - Exit controller from suspend mode for host.
*
* @hsotg: Programming view of the DWC_otg controller
*
* This function is for exiting Host mode suspend.
* Must NOT be called with interrupt disabled or spinlock held.
*/
void dwc2_port_resume(struct dwc2_hsotg *hsotg)
{
unsigned long flags;
u32 hprt0;